Presentation on theme: "Navigation Systems GPS Set Ups. Vertical Datum Select a unit of measure for water depth: –Feet, –Fathoms, or –Meters."— Presentation transcript:
Navigation Systems GPS Set Ups
Vertical Datum Select a unit of measure for water depth: –Feet, –Fathoms, or –Meters.
Depth Reference Refer to the General Information Block on your NOAA Chart for the correct depth (vertical) datum.
Soundings in Fathoms at MLLW-Mean Lower Low Water.
Horizontal Datum Update your GPS with the HORIZONTAL DATUM referenced on the nautical chart that you are using. WGS84
Distance Select a unit of measure for DISTANCE: –Nautical Miles –Statute Miles When you are using your GPS on a boat, always set the Distance Unit of Measure to Nautical Miles.
Speed F Select a unit of measure for SPEED: –Nautical miles per hour - KNOTS. –Statute miles per hour - MPH When you are using GPS on a boat, set the speed unit of measure to KNOTS – Nautical Miles Per Hour. (May be automatic)
Course and Bearings Select a heading format: –TRUE –MAGNETIC Update your GPS set
Time Format F Select a time format: –24 hour clock format –12 hour clock format Update your GPS set
GPS Time Setup Select a Time Setup. –UTC –Local time Update your GPS Set
Altitude Mode Set your GPS for the height of your GPS antenna at sea level. Update your GPS Set
GPS 76-Handheld IN (ZOOM) OUT NAV POWER (LIGHT) QUIT ANTENNA CURSOR PAGE MENU ENTER SCREEN
Set the GPS Alarms! *X*XTE Alarm. *A*Anchor Alarm. *W*Waypoint Arrival Alarm
Waypoint Arrival Alarm Illustrated An arrival alarm sounds whenever the boat crosses an adjustable ring around the destination waypoint.
Horizontal Datum Course and Bearings Navigation Mode Alarms: WPT XTE Anchor
Unit of Measure Screen Set up for Units Depth/Altitude in: FEET Distance in: NAUTICAL MILES Speed in: KNOTS Temperature in: FAHRENHEIT WIN change interval: 05 sec MANUAL Display text in: ENGLISH (US)
RayChart 420 Your position is here
Unit of Measure Screen Navigation Set up Datum Name: World Geodetic System 1984 Delta position: N W Course and bearings: TRUE Navigation Mode: RHUMBLINE WP circle alarm: ON 0.10nm XTE alarm distance: ON 0.10nm Anchor alarm OFF 0.00nm
Unit of Measure Screen Position Setup: Manual antenna altitude 2m Altitude mode: MANUAL Display depth in POS display: YES DGPS input format: RTCM 1.04 DGPS: data 0, max 2, test 1860 Speed and course filter level: 3 Start Position: LAT_______ LON ________
ANY QUESTIONS? F What type of speed is developed by a GPS set as you move your boat over a course line? Speed Thru the Water Speed Over the Ground Ded Reconing Line Speed Made Good